405261242 has 8 divisors (see below), whose sum is σ = 634322016. Its totient is φ = 193820572.

The previous prime is 405261229. The next prime is 405261251. The reversal of 405261242 is 242162504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4404968 + ... + 4405059.

It is an arithmetic number, because the mean of its divisors is an integer number (79290252).

Almost surely, 2^405261242 is an apocalyptic number.

405261242 is a deficient number, since it is larger than the sum of its proper divisors (229060774).

405261242 is a wasteful number, since it uses less digits than its factorization.

405261242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8810052.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 405261242 is about 20131.1013608297. The cubic root of 405261242 is about 740.0226691375.

The spelling of 405261242 in words is "four hundred five million, two hundred sixty-one thousand, two hundred forty-two".